3 Answers
3

These are dynamic disks, fairly common with Win 7. Usually if you try to create a 5th partition it offers to convert to dynamic. What it means is that you could have other partitions not shown in the MBR partition table (that Ubuntu won't see).

i did install ubuntu inside win7. i dont think i was asked to chose about the partition.
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nebulaMay 10 '11 at 14:50

Are you saying this is a WUBI install?? you cannot modify the file system structure if this is the case and you will not be able to install burg to manage your boot loader.......
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Mark RooneyMay 10 '11 at 21:38